Box-making machine.



E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22,1905.

913,837. Patented M21112, 1909,

14 SHEBTSSHBET 1 a7 ill/74 20 2/ 15 M WITNEEEEE: INYENTUP gwjyz E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22,1905.

91 3 ,837. Patented Mar. 2, 1909.

14 SHEETS-SHEET 2.

WITNESSES: 2 mvmmnn \JLQdQQQZ/M/Zm x/w/ E. W. MYERS.

BOX MAKING MACHINE.

APPLIOATION FILED AUG. 22,1905. 91 3 ,837. Patented Mar. 2, 1909. 14 SHEETS-SHEET 3.

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BOX MAKING MACHINE.

APPLICATION FILED AUG. 22,1905. 91 3,837, Patented Mar. 2, 1909.

14 SHEETfi-SHEET 4.

3 WLTNEEEEEI INYENT DB E. W. MYERS. BOX MAKING MACHINE.

APPLIOATION FILED AUG. 22,1905. 91 3,837. Patented Mar. 2, 1909.

14 SHEETS-SHEET 5.

WITNESSES: (5 W7 INYENTEIPI (mu/2a. 7 4 fidw 7 7pm W y 47 E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22. 1005.

Patented Ma112, 1909.

14 SHEETSSHBET 6.

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E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22, 1905.

Patented Mar. 2, I909.

14 SHEETS-SHEET 7.

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BOX MAKING MACHINE.

APPLICATION FILED AUG. 22, 1905.

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BOX MAKING MACHINE.

APPLICATION FILED AUG. 22, m-

Patented Mar. 2, 1909.

14 SHEETS-SHEET 9.

VIII/VIII? ihfmucu E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22, 1905.

913,837, Patented Mar. 2, 1909.

14 SHEETSSHEBT 10.

SH'UGMrOI 6% Qvil ucomzs I F 8 m E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AUG. 22,1905

V 913,837, Patented Mar.2,1909.

14 SHEETSSHBET l1.

@vitneaoea I 510.10%, I fay E. W. MYERS.

BOX MAKING MACHINE.

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BOX MAKING MACHINE.

APPLICATION FILED AUG. 22, 1905.

. 913,837. Patented Mar. 2, 1909.

14 SHEETS-SHEET 13.

'E. W. MYERS.

BOX MAKING MACHINE.

APPLICATION FILED AU 22,1905.

913,837. Patented Mar. 2, 1909.

14 SHEETSSHEET 14.

WlpTNEEEEEZ INYENTUP u f Q 2km W14 UNITED STATES PATENT OFFICE.

EDGAR MYERS, OF ROSEDALE, KANSAS, ASSIGNOR TO AMERICAN BOX MACHINE COM- PANY, OF-KANSAS CITY, MISSOURI, A CORPORATION OF MISSOURlQ BOX-MAKING- MACHINE.

Specification of Letters Patent.

Patented March 2, 1909.

Applicatipn filed August 22, 1905. Serial No. 275,278.

To all whom it may concern:

Be it known that I, EDGAR W. MYERS, a citizen of the United States, residing at Rosedale, in the county of Wyandotte and State of Kansas, have mvented certain new and useful -Improvements in Box-Making Machines, of which the following is a specification.

My invention relates to improvements in box nailing machines.

The object of my invention is to provide a machine for very rapidly and automatically making wooden boxes.

My invention provides a machine particularly adapted to make rectangular wooden boxes, the side, end and bottom boards of which are formed from material previously prepared in suitable dimensions.

My invention provides a machine having suitable board assembling and nailing feed ing and driving mechanisms by means of which the side, end and bottom boards are simultaneously withdrawn from separate piles, then pro erly assembled to form a box, after which at of the nails for securing the members of the box to each other are simultaneously and automatically driven.

My invention provides further, mechanism by which the side, end and bottom boards are withdrawn from different piles of boards, one board at a time from each pile, the boards being disposed in the piles in a horizontal position, means by which the side and end boards so withdrawn are then swung to a vertical position and in position for being nailed to each other, the withdrawn bottom board being then positioned for nailing to the other board forming the box, and nail driving mechanisms for simult'aneously driving all the nails for securing the assembled boards together.

My invention provides further, a machine capable of adjustment for the assembling and nailing together of boards of different length, width, and thickness for the purpose of forming boxes of different dimensions.

My invention provides further, board as sembling, holding and nailing mechanisms by which the side, end and bottom boards are simultaneously assembled to form the box, then securely 'and releasably held in position for nailing, the box being automatically released from the holding mechanism after the nails have been simultaneously 55 driven.

Other novel features are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate my invention, Figure 1 is a plan view of the machine, part of the nail feeding mechanism being omitted. Fig. 2 is an end elevation view of the machine, part of the nail feeding mechanism being broken away. Fig. 3 is a side elevation of the machine, part the nail feeding mechanism being omitted. ig. 4 is a longitudinal vertical sectional view of what is shown in Fig. 3. Fig. 5 is a transverse vertical sectional view, taken on the dotted line a-b of Fig. 4. Fig. 6 is a trans verse, vertical sectional view, taken on the dotted line c-d of Fig. 1, similar parts being broken away. Fig. 7 is an end elevation view of one of the clutches and some of the parts cooperating therewith, and a portion of the adjacent vertical supporting frame. ,Fig. 8 is a horizontal sectional viewof the clutch mechanism and parts connected therewith, taken on the dotted line e-f of Fig. 2. Fig. 9 is an end elevation view of some of the parts shown in Fig. 7 but occupying in some instances, different positions. view of some of the clutch controlling parts. Fig. 11 is a view similar to Fig. 10, the movable parts being shown in dillerent positions from that occupied by them in Fig. 10. Fig. 12 is an enlarged transverse sectional view of a one of the side board assembling mechanisms,

the view being taken on the dotted line ab of Fig. 4, the parts being shown in position for removing from the pile the bottom board. Fig. 13 is a view similar to Fig. 12, and show ing the side board positioned for nailing. Fig. 14 is a side elevation view of one of the members for swinging in position the side boards. Fig. 15 is a sectional view taken on the dotted line m-n of Fig. 13. Fig. 16 is a horizontal sectional view taken on a plane corresponding to the dotted line 'i of Fig. 2, and the dotted line k-Z of Fig. 12, and

showing the parts in the positions assumed by them just rior to the positioning of the nail boxes for riving. Fig. 17 is a view similar to Fig. 16, the parts being shown in the positions occupied by them while the nails arebeingdrivon. Fig.18is averticalsectional view taken on the dotted line gh of Fig. 17. Fig. 19 is a vertical sectional view taken on the dotted line o of Fig. 2, showing one of the end board ibeding and assembling mechanisms with the parts in the positions Fig. 10 is a side elevation occupied by them just prior to positioning the board ready for nailing. Fig. 20 is a vertical sectional view similar to that shown in Fig. 19, of some of the parts shown in the said figure, with the end board positioned ready for nailing. Fig. 21 is a sectional view taken on the dotted line gr of Fig. 22. Fig. 22 is a top view of a portion of the mechanism employed for releasably holding the bpards in position for nailing. Fig. 23 is a transverse sectional view taken on the dotted line st of Fig. 22. Fig. 24 is a longitudinal sectional view of one of the nail driving boxes, showing the nail driving plunger retracted. Fig. 25 is a view similar to Fig. 24, showing the plunger forcing a nail into the boards forming the boX. Fig. 26 is a horizontal sectional view, taken on the dotted line u o of Fig. 24. Fig. 27 is a cross section taken on the dotted line w5c of Fig. 24. Fig. 28 is a vertical sectional view of one of the nail boxes used for driving nails in the bottom board. Fig. 29 is a view similar to Fig. 28 but taken in a plane at right angles from that in which Fig. 28 is taken. Fig. 30 is a perspective view of the nail box shown in Figs. 28 and 29. Fig.

31 is a perspective view of the nail box shown in Figs. 24, 25, 26 and 27, which represent one of the boxes used for driving the nails in the side boards. Fig. 32 is a top view of the nail pans at one end of the machine and parts connected therewith. 33 is a plan view, enlarged, of a portion of one of the nail feeding mechanisms with the nail feeding slide shown in position for dropping the nails. Fig. 34 is a view similar to Fig. 33 with the nail feeding slide retracted for receiving another installment of nails. Fig. 35 is a side elevation view, also partly in vertical section, of a portion of the nail feeding mechanism at one end of the machine. Fig. 36 is an end elevation view of what is shown in Fig. 35. Fig. 37 is an enlarged vertical sectional view of the lower end ofone of the nail pans.

Similar characters of reference denote similar parts.

1 denotes the base of the machine, preferably a hollow rectangular body, open at its lower end and provided with an opening 2 in its upper end for the passage therethrough of the completed boxes. The lower end of the base 1 is supported upon the floor or plat form 3, provided with an opening 4 through which the finished boxes may pass. Upon the up er side of the base are two transverse vertica -l frames 5, each provided with an outwardly extending, longitudinally disposed horizontal portion 6. The two frames 5 are similar in construction and serve to en port the boards for making the boxes, the card assembling mechanism, and the nail feeding and driving *nechanisms.

Upon the upper side of the base 1 is mounted the longitudinally disposed plate 7 provided with a central opeiung 8 for the erase"? passage of the boxes, and provided at each side of said opening; with two longitudinal parallel guide stri s 9 on which are slidably mounted the horizontal ortions 6 of the frames 5. Near the midd e of the plate 7, at

each side of the frame 6, is secured a post 10,

in which is mounted rotatably, a longitudinal, horizontal bar 11. On each bar 11 at each side of the post 10, is secured a collar 12, which prevents longitudinal movement of the bar 11. Each of said bars is provided at its ends with right and left screw threads. The screw threaded ends of the two bars 11 are mounted respectively in screw threaded holes provided in the lateral lugs 13, secured The mechanisms at both ends of the ma-.

chine, supported by the frames 5 and their horizontal portions (L'being identical in construction, a description of the mechanism at one end will answer for the other. Near the outer end of the portion 6, is mounted a table 14 provided in its horizontal portion with a longitudinal slot 15, through which passes Y the up er side of a horizontal, longitudinal link be t 16, the inner end of which is mounted on a sprocket wheel 17, supported by a rotary shaft 18, the ends of which are mounted respectively the upper ends of vertical bearings 19, and the lower ends of which are supported upon the upper side of the frame 6. The outer end of the belt 16 is mounted on a sprocket wheel 20, sup orted by a transverse horizontal rotary s aft 21, the ends of which are supported by the brackets 22, secured to the outer side of the table 14. These parts are best illustrated in Figs. 1, 2, 3, 4, l9 and 20. Upon one of the links of the belt 16 is mounted a button 23 which, when the belt 16 is driven, passes through the slot 15 and engages and carries along with it the under one of a series of horizontal boards 24, mounted in a vertical pile upon the upper side of the table and between four vertical guides 25, the lower ends of which are secured to the upper side of the table 14. The boards 24 are used for the end boards of the boxes. When the shaft 21 is rotated in the manner hereinafter described, the belt 16 is driven carrying with it the button 23 which, in passing through the slot 15, carries with it the under board from the ile 24 and deposits the said board upon t e uppcr sides of two arms 27, each rigidly secured to a horizontal transverse rock shaft 28, rotatively mounted in suitable bearings dprovided upon the frame 5. The inner gui cs 25 are proinclusive, it will be seen that each of the arms 27 has mounted onit a boxing 29, which is adjustable lengthwise on the arm 27 and may be secured in any desired positlon thereto, by means of a set screw 30 adapted to have its inner end bear against the side of the arm 27. A pawl 31, having its outer end extending beyond the boxing 29, has its inner end mounted on and rotatable with a horizontal,

transverse rock shaft 32, provided at one end with a crank arm 33, to which is secured one end of a coil spring 34, the other end of which is secured to a pin 35, rojecting laterally from the arm 27. An ar justing screw 36 is rotatabl mounted in a threaded opening provide in the pawl 31. The inner end of said adjusting screw is adapted to rest against the transverse portion of the boxing 29. The inward movement of the pawl 31 may thus be regulated.

Referring now to Figs. 1, 2 and 3,-37 denotes a pinion mounted on and rotatable with the shaft 21 and meshing with the spur gear wheel 38 rotatively mounted on a stud 39, projecting laterally from one side of the table 14. On the outer side of the ear wheel 38 is provided a pin 40, mounted 1n a slot 41 provided lengthwise in the outer end of an inwardly extending connecting rod 42,

' the inner end of which is ivotally connected to the outer end of a cran arm 43, the inner end of which is secured to one end of the shaft 28,- to which the arms 27 are secured. It will thus be seen that when the shaft 21 is driven the belt 16 will be driven and will force the boards 24, one by one, from the table '14, upon the arms 27 and under, the pawls 31. The mechanism is so timed that when the withdrawn board is in the position shown in Fig. 19, the connecting rod 42, through the intermediacy of the gears 37, 38, and pin 40, crank arm 43 and rock shaft 28, will force the arms 27 to the position shown in Fi 20, in which position the Withdrawn end card will be disposed between .the adjacent ends of the side boards, ready for being nailed thereto. The releasable pawls 31 on the arms 27 are pivotally'mounted 1n the manner shown, so that after the box has been nailed together and the arms 27 swung toward the position shown in Fig. 19, the pawls 31 will yield against the pressure of the springs 34 so as to permit the awls to pass under the lower edges of the em boards, after which the springs 34 will retract tle said pawls to the normal osition relative to the arms 27, shown in igs." ,19 and 20. The slot 41 is provided in the rod 42 so that the arms 27 may be at rest while'the boards 24 are being moved upon the arms 27, and

shown in Fig. 20 during the nailing operation. The parts are so arranged that during the nailing operation, the stud 39, pin 40 and ivotal ioint of the rod 42 and crank 43 will e in alinement with each other, thus rigidly holding the arms 27 while the nails are being driven into the boards supported by said arms 27 Referring to Figs. 3, 4, 5, 12, 13, 16 and 17, the following is a description of the means for assembling and supporting the boards which form the sides of the boxes. Two mechanisms are employed to support and feed the side boards, and each mechanism being similar to the other, but one need be described. In each frame 5 are mounted, one at each side of the opening2 of the base 1, two transversely horizontally adjustable carriages 91 hereinafter described, the carriages being adjustable toward and from each other in order to accommodate the machine to making boxes of different widths. Four vertical frames 5 are rigidly secured between the frames 5 one to each carriage 91. Four vertical guides 44 are secured, as shown in Fig. 1, one to each frame 5. The side boards 45 are iled in horizontal layers between corresponc ing guides 44 on opposite frames 5, and are supported by transverse lates 46 having flanges 47 upon which the oards rest and secured to the lower ends of the (guides 44 respectively. Rotatively mounte at its ends in opposite frames or plates 5 is a shaft 48 having mounted thereon two sprocket wheels 49. On each wheel 49 is mounted one end of a link belt 50 disposed adjacent one of the frames 5 and having a button 51 adapted to pass under the pile of boards 45 and engage and force inwardly from under the pile the lowermost board. The other endof tle belt is su ported upon a sprocket wheel 53 rotativel y mounted upon a stud 52 extending at right angles inwardly from the adjacent frame 5. Upon the inner side of each frame 5, is provided a stud 54, upon which is mounted a rock arm 55, upon which the withdrawn boards from the pile 25 are deposited by means of the button 51 on the link belt 50. To hold the side boards during the process of nailing, each of the arms 55 has ivoted to one side of it a awl 56 adapted to receive between it an the arm 55 the withdrawn board. Each )awl 56 is secured to a rock shaft 57 rot'atively mounted in the arm 55 and provided with a crank arm 58, to one end of which is secured the coil spring 59, the other end of which is secured to a pin 60, mounted in the stud 54, on which the arm 55 is mounted. Each arm 55 provided with a series of teeth 61, forming a segmental gear which meshes with a segmental gear 62, mounted upon and rotatable with a horizontal longitudinal shaft 63, the ends of which are rotatively mounted in transverse holes provided respectively in the vertical portions of the two frames 5. One of the segmental gears 62, at each side of the machine, is provided with an arm 64, having a dovetail radial slot 65, in which is mounted the inner end of a pin 66, as shown in Fig. 15, on which pin 1s mounted a sleeve 67, which is held in position by means of a' nut '68, mounted on the screw threaded outer end of the pin 66.

Upon each sleeve 67 at each side of the machine is pivotally mounted the inner end of a connecting rod 69, provided at its outer end with a longitudinal slot 70, in which is mounted a horizontal crank pin 71, secured to the side of a spur gear wheel 72 rotativel mounted upon aminwardly extending horizontal stud l3 secured to the inner side of theadjacent frame 5'. The gear 72 meshes with a pinion 74 mounted on and rotatable with the shaft 48. When the shaft 48 is rotated rotation is imparted to the gears 74 and 72 and thus rocking the arms 55 to and fro through the intermediacy of the connecting rods 69, segmental gears 62, and shaft 63. necting rod 69 so that the arms 55 may be held at rest in the position shown in Fig. 12 at which time the withdrawn board 45 is deposited by the buttons 51 upon the arms 55 and under the awls 56. During the time the side board are being nailed the pins 66 and 71 and stud 73 arein alinement with each other. To each of the gears62, having connected to it the rod 69, is secured one end of the retracting spring 75 the other end of which is secured to a projection 76 on the inner sideof the adjacent frame 5 This spring normally retains the arms 55 in the position shown in Fig. 13.

The side. boards are. fed as follows During the time the end boards 24 are being raised in position for nailing, as shown m Fig. 20, the link belts 50, by means of the buttons 51, force the side. boards inwardly and upon the arms 55. Thearms 55 are then raised by the mechanism ust described to the positions-shown in Figs. 5 and 13, at which time the said boards and the assembled end boards 24 disposed between the side boards 45, are in position for nailing. At this time the bottom boards 77 are shd upon the up or edges of the assembled boards 24 an 45, as shown 1n Fig. 5, in position for nailing thereto The bottom boards 77 are arranged in a pile between two vertical guides 78 the lower ends of Wl'llCh are secured respectively to two brackets 79 mounted respectively upon opposite guides 44 disposed at one side of the opening 2 of the base 1. Referring to Figs. 1 and 5, upon the inner side of each frame 5, ust above the bracket 79 adjacent thereto, is shdably mounted in suitable bearings a horlzontal transverse bar 80, also shown in Fig. 4, provided with a spring pawl 81, shown in Fig. 1,

The slot is provided in the con-' mass? adapted to slide past the adjacent end edge of the bottom board 77 when the slide bar 80 is retracted in one direction, and then engage the rear edge of the said bottom board so as to draw the bottom board over the upper edges of the assembled boards 24 and 45, when the bar 80 is retracted in the other direction.

In order to move the bars 80 to positions in which they will engage the rear edge of the bottom board 77, each slide bar has se-g cured to it one end of a coil spring 82 the other end of the spring being secured in any desired manner to the adjacent frame 5. After the pawls 81 have engaged the bottom board 77, as shown in Fig. 1, the slide bars 80 are moved inwardly so as to withdraw the bottom board as follows :To the inner end of each slide bar 80, is'secured one end of a sprocket chain 83. Said sprocket chain passes over a sprocket wheel 84, rotatively mounted on a stud 85, secured on the inner side of the adjacent frame 5, thence passes upwardly over a sprocket wheel 86, rotatively mounted on a stud 87, secured to the adjacent frame 5, thence over a sprocket wheel 88 rotatively mounted on a stud 89, secured to' the adj acent'frame 5, and thence to a ventical rod 90, to the upper end of which the chain 83 is secured, the lower end of said rod 90 being secured pivotally to the pin 71, as shown in Figs. 5, 12, 13, and 16. During the revolution of the gear wheel 72, the rod 90 is drawn downwardly, thus retracting the chain 83 and the slide bar 80 against the pressure of the spring 82, thus drawing the bottom board from the pile 77 and depositing it in position upon the upper edges of the. boards 24 and 45, as shown in Fi 5. 1 The arrangement of the parts is such that the bottom boards are deposited in position immediately upon the assembling of the ends and side boards in the position for nailing.

The following is a description of the mechanism employed for driving the nails through the side into the end boards :Each ofthe vertical frames '5 has slidably mounted upon it two horizontal substantially rectangular nail box carriages 91 disposed one at each side of the middle of the frame and adjustable toward and from each other to accommodate the machine to making boxes of different widths.

to its inner side the lower end ofone of the Each carriage 91 has secured to move the carriage transversely in the j frame in which it is mounted when the bolt 92 is properly turned.

Referring to Figs. 2, 4, 6, 12, 16, 17 and 18,

5 94 denotes 12 side nail driving boxes, in i which the nails are fed and from which they are driven into the side boards as ex plained hereinafter. The boxes 94 are I mounted in sets of three disposed one set at each side of the opening 2 on each frame 5, the boxes. of each set being mounted one above the other. The nail boxes 94 of each set are rigidly secured by means of set screws 95, see Figs. 6, 16 and 17, to 'a vertical rod 96, pivotally mounted in two horizontal plates 97 pivotally connected respectively to the carriage 91 by the vertical pins 98. By swinging the plates 97 to the position shown in Fig. 16, the nail boxes 94 may be moved to a position permitting the assembling of the side boards ready for nailing, after which the plates 97 are swung to the position shown in Flg. 17 so that the nails may be driven into the side boards. The lates 97 are arranged in sets of two dispose one plate above the other. To swing each set of nail boxes 94 to and fro, each set of plates 97 has a vertical rod 99 xtending through and secured to the upper and lower plates 97. To each rod 99 is pivotally connected one end of a link 100, theother endof which is pivotally connected by a vertical pin 101 to the inner end of a horizontal transverse bar 102 the other end of which is ivotally mounted between two horizontal y extending ears 103 provided on the outer side, one above the other, of the adjacent carriage 91. tudinally disposed coil spring 103', see Figs. 16 and 17, is connected at one end to the adj acent'bar 102 and at its other end to the adj acent carriage 91. This spring normally holds the bar 102 against the peripheries of two horizontal disks 104 disposed one above the other in the adjacent carriage 91. Each disk 104 is provided with a peripheral projection 105 adapted when the disk is rotated to strike and force outwardly the adjacent bar 102. Each of the four upper disks 104 is rigidly secured to the lower end of an ad jacent vertical shaft 106, of which there are four, the lower end of each shaft being rotatively mounted in bearings 107 mounted up on the outer side of the adjacent carriage 91. The upper ends of the four shafts 106 are A horizontal longirotatively mounted respectively in vertical I meshes with a pinion 111 rigidly secured upon -'an adjacent horizontal shaft 112 disposed j parallel with the adjacent two shafts 109 and rotatively mounted in bearings 113, provided one at each end of each frame. 5. At each end of each shaft 112 is secured a balance wheel 114, which serve to secure the ready release of clutch mechanism described hereinafter and which imparts rotation to the shaft 112. Upon each of the shafts 109 is mounted a bevel gear wheel 115, which is rotatable with and slidable lengthwise upon the shaft 109, which shaft is rovided with a longitudinal groove 116, to w rich the bevel gear 115 is keyed. Each bevel gear 115 meshes with another bevel gear 117 rigidly secured upon the upper end of each vertical shaft 106. Rotation is thus imparted to each vertical shaft 106 from adjacent shaft 109. Each lower disk 104 is rigidly secured to the upper end of a vertical shaft 118, rotatively mounted in bearings 119, secured one to the outer side of each carriage 91, see Figs. 6, 16, 17 and 18. A vertical transverse pin 120 is secured at its ends respectively to the upper and lower disks 104.

Pivotally connected at its inner end to the pin 120, is a horizontal, transverse rod 121, the outer end of which is pivotally con nected to a vertical pin 122, having its' ends secured respectively in the upper and lower sides of a plunger chuck 123, the upper and lower sides of which are grooved transversely to slidably fit two horizontal transverse slides 124 provided respectively upon the upper and lower inner sides of each carriage 91. When the cam disks 104 are rotated each of the plunger chucks 123 is reciprocated toward and from the adjacent nail boxes 94. A nail driving plunger 125 is pivotally connected at its outer end by means of a vertical pin 126 to the adjacent plunger chuck 123. Each of the nail plungers 125 is horizontally disposed and is slidably mounted at its inner end in a transverse hole provided through the adjacent nail box 94. The construction of each nail box 94 is best shown in Figs. 24, 25, 26, 27 and 30. The upper and lower sides of each nail box 94 are provided with horizontal grooves 127,. in which are disposed respectively two jaws 128 and 129. The jaw 128 is pivoted to the box 94 at the rear end of said jaw by means of a horizontal pin 130. The jaw 129 is similarly pivoted to the nail box by means of a horizontal pin 131.

In a horizontal hole provided near the outer end of the jaw 128 is secured one end of a horizontal pin 132, to the other end of which is secured one end of a coil spring 133, the other end of which is secured to the outer end of a horizontal pin 134, the inner end of which is secured 'to the inner end of the jaw 129. The spring 133 is mounted in a ver- 4 tical hole 135, extending through the box94.

A slot 136 connects the hole 135 with the groove 127 for ermitting vertical movement therein of the pm 132. A similar slot 137 connects the lower groove 127 with the hole 135 for permitting vertical movement therein of the pin 134. The inner side of each jaw 129 and 128 at its inner end is provided with a longitudinal groove 138 for the passage of the securing nail, one of which is denoted by 139-. Each nail box 94 is rovided with an interior chamber 140 into which the nails are fed, one at a time, and through which the plunger 125 passes when driving a nail. r

A series of upwardly extending nail carrying tubes 141 are secured res ectively, one to each nail box 94 and disc arge respectively into the chambers 140, as shown in Figs. 5,24,25 and 30. I The nail tubes 141 extend upwardly and are secured respectively to the upper ends of the frames 5, where they receive the nails from the nail feeding mechanisms, described hereinafter. When the arms 55 and 27 are swinging the side and end boards respectively into position for nailing, the cam disks 104 have rotated to positions in which the chucks 123 are retracted to the position shown in 16. At the same time the cams 105 have forced the arms 102 outwardly against the pressures of the springs 103 thus withdrawmg, in the manner already described, the nail boxes 94 from the path of the side boards At this'time a nail has beenfed through each tube .141 into each chamber 140, being carried there by gravity, and

deposited in position directly in'front of the adjacent plunger 125. Further rotation of the cam disks 104 advances inwardly each chuck 123, and thus forcing inwardly the plungers 125. At the same time the cams 105 will pass from contact with the arms 102-, at which time the retracting springs 103 will force the nail boxes 94, through the in-- termediacy of the mechanism already described, to the position shown in Fig. 17. The continued forward movement of each plunger 125 will force the nail 139 through the grooves 138, into and through the side board 45'and into the adjacent end board 24. Each spring 133 will hold the inner ends of the adjacent jaws 128 and 129, against each other, thus supporting the nail until it has entered the boards 45 and 24. The head of the nail, together with the inner end of the mass? 97 and rods 96, thus releasing the nailed box and permitting it to drop downward as soon as the arms 55 have been rocked sufficiently far to release the pawls 56 from the side boards 45. Atthe same time the plungers 125 will be again withdrawn, after which another nail will be fed through each tube 141, into the chamber 140, into which said tube discharges at its lower end.

I will now describe the mechanism for nailing the bottom boards to the upper edges of the end boards. In the middle of each vertical frame 5 and between vertical parallel planes located at the inner ends respectively of the nail box carriages 91, is, vertically and adjustably mounted a nail box carriage 91, constructed similarly to the carriages 91, disposed vertically and in a position at right angles to the carriages 91. In a vertical screw threaded hole provided in the middle and upper end of each frame 5,

is rotatively mounted a vertical screw 92, the lower end of which is extended through a vertical hole provided in the upper end of the adjacent carriage 91, as shown in Figs. 2, 5 and 6. Secured upon the bolt or screw 92 at each side of the upper end of the carriage 91 are two collars 93 which securely holds the carriage in the position to which it may be adjusted. Secured one each to the inner end of each adjacent shaft 109 are twocam disks 104, corresponding in construction to the cam disks 1%, and connected to each other by means of a transverse horizontal pin 120, corresponding to pin 120. Pivotally connected at its lower end to pin 120 is a connecting rod 121 the upper end of which is pivotally connected to a horizontal pin 122 mounted in a nail chuck 123 corresponding in construction to the chuck 123, and vertically slidable upon the carriage 91 upon which it is mounted. The parts just described are best shown in Fig. 4.

Pivotally connected at their upper ends to each nail chuck 123 are a series of vertical plungers 125 the lower ends of which enter openings rovided in the nail boxes 94 respective y. The said plungers 125 and the boxes 94 are constructed identically in the same manner as the plungers 125 and nail boxes 94. The nail boxes 94, mounted on each frame 5, are secured rigidly by means of set screws 95, upon a transverse horizontal rod 96 pivotally mounted at its ends in two vertical plates 97, whichare pivoted at their upper ends to the lower end of the carriage 91 in the samemanner as are ivoted the plates 97 to the carriages 91. [he lates 97 are swung inwardly and outwar y, thus swinging inwardly and outwardly the nail boxes 94, by means of links 100, pivotally connected at one end to the plates 97 and at the other end each to an ad-,.. acent vertical bar 102 which bears upon the 

